Reidentification is the act of identifying someone or something again after a previous identification. In order to express this idea, there are several synonyms that can be used such as re-identification, re-recognition, revalidation, reauthentication, reconfirmation, reaffirmation, reconfirmation, reestablishment and reassertion. These words can be employed to indicate the process of establishing anew the identity of someone or something that has already been identified in a previous occasion. The use of synonyms is crucial in language as it allows the expression of similar ideas in different ways, thus enhancing the communication process.